21890110

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{79}}^1\times {\mathrm{229}}^1$

素因数の和:337

約数の個数: 48

約数和(自身を含む): 44049600

約数和(自身を除く): 22159490

約数列:

[1, 2, 5, 10, 11, 22, 55, 79, 110, 121, 158, 229, 242, 395, 458, 605, 790, 869, 1145, 1210, 1738, 2290, 2519, 4345, 5038, 8690, 9559, 12595, 18091, 19118, 25190, 27709, 36182, 47795, 55418, 90455, 95590, 138545, 180910, 199001, 277090, 398002, 995005, 1990010, 2189011, 4378022, 10945055, 21890110]

約数ペア:

[(1, 21890110), (2, 10945055), (5, 4378022), (10, 2189011), (11, 1990010), (22, 995005), (55, 398002), (79, 277090), (110, 199001), (121, 180910), (158, 138545), (229, 95590), (242, 90455), (395, 55418), (458, 47795), (605, 36182), (790, 27709), (869, 25190), (1145, 19118), (1210, 18091), (1738, 12595), (2290, 9559), (2519, 8690), (4345, 5038)]